Deli, N. A., Hariani, R. and Nasution, R. S. (2025) “Synthesis of Methyl Ester Sulfonate from Crude Palm Oil Based on Aluminum Oxide Catalyst”, Journal of Engineering Science and Technology Management (JES-TM), 5(1), pp. 75–80. doi: 10.31004/jestm.v5i1.237.